TY - JOUR TI - Variational principle for non-linear fractional wave equation in a fractal space AU - Yao Shao-Wen JN - Thermal Science PY - 2021 VL - 25 IS - 2 SP - 1243 EP - 1247 PT - Article AB - The fractal derivative is adopted to describe the non-linear fractional wave equation in a fractal space. A variational principle is successfully established by the semi-inverse method. The two-scale method and He’s exp-function are used to solve the equation, and a good result is obtained.